Yuuma is a high guardian and leader of the Arslayer Grand Soeurs in Parallel Paradise. In the past, she saved Tris from the Karu, which caused them to date each other. After killing the traitorous-guardian-turned witch Mimi, and being on the verge of dying from her Last Moon and leaving Tris behind as the one of the last remaining Guardians. Yuuma goes back on her word and mates with Youta after being begged by Tris to live.